57 results for “contact time”

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Research ArticleOpen accessIn the abstractCharacterization of the Adsorption of the Lead (II) by the Nonliving Biomass Spirogyra neglecta (Hasall) KutzingModher A. Hussain, Aishah Salleh, Pozi MilowProblem statement: Conventional techniques for removing dissolved heavy metals are only practical and cost-effective when applied to high strength wastes with heavy metal ion concentrations greater than 100 ppm. The possibility of using a nonliving algal biomass to solve this problem was carried in this study. Lead (II) was used in this study because it had been reported to cause … …American Journal of Biochemistry and Biotechnology, Vol. 5, Issue 2 · 30 Jun 2009 · 7,802 accessesView PDF Cite

Research ArticleOpen accessIn the abstractPotential of Agarose for Biosorption of Cu(II) In Aqueous SystemAnurag Pandey, Debabrata Bera, Anupam Shukla, Lalitagauri RayThe ability of agarose gel as an adsorbent for Cu(II) ions in aqueous solution was studied. The experiments were done as batch processes. Batch kinetics and isotherm studies were carried out under varying experimental conditions of contact time, Cu(II) ion concentration, adsorbent dose, temperature and pH. Adsorption equilibrium of agarose gel was reached within 4 h for agarose gel when … …American Journal of Biochemistry and Biotechnology, Vol. 3, Issue 2 · 30 Jun 2007 · 6,829 accessesView PDF Cite

Research ArticleOpen accessIn the abstractReduction of Microbial Population in Cheese Whey by UV in a Single and Series Conventional ReactorsA.E. Ghaly, J. P. SinghIn this study, the effectiveness of two conventional UV reactors in series for the online sterilization of cheese whey was compared to that of a single conventional reactor. The single reactor and the two reactor series were tested at eleven flow rates (5, 10, 15, 20, 25, 30, 35, 40, 50, 60 and 70 mL min-1) and five flow rates, … …American Journal of Biochemistry and Biotechnology, Vol. 2, Issue 3 · 30 Sep 2006 · 6,736 accessesView PDF Cite

Research ArticleOpen accessIn the abstractDye Removal from Aqueous Solution by using Adsorption on Treated Sugarcane BagasseS. Saiful Azhar, A. Ghaniey Liew, D. Suhardy et al.The use of cheap and ecofriendly adsorbents has been studied as an alternative substitution of activated carbon for the removal dyes from wastewater. Adsorbents prepared from sugarcane baggase-an agro industries waste was successfully used to remove the methyl red from an aqueous solution in a batch reactor. This study investigates the potential use of sugarcane baggase, pretreated with formaldehyde (PCSB) … …American Journal of Applied Sciences, Vol. 2, Issue 11 · 30 Nov 2005 · 9,345 accessesView PDF Cite

Research ArticleOpen accessIn the abstractPotential of Rice Husk and Rice Husk Ash for Phenol Removal in Aqueous SystemsA. H. Mahvi, A. Maleki, A. EslamiThe potential of rice husk and rice husk ash for phenol adsorption from aqueous solution was studied. Batch kinetics and isotherm studies were carried out under varying experimental conditions of contact time, phenol concentration, adsorbent dose and pH. Adsorption equilibrium of rice husk and rice husk ash was reached within 6 hours for phenolic concentration 150-500 μg/L and 3 hours … …American Journal of Applied Sciences, Vol. 1, Issue 4 · 31 Dec 2004 · 10,171 accessesView PDF Cite

Research ArticleOpen accessIn the abstractUsing a Truss-Inspired Model with the Uniform Strength Optimization Theory to Predict Spongy Bone Geometry in Proximal FemurHamed Pishdast, Farzam Farahmand, Gholamreza RouhiThis paper presents a new naïve approach for simulating bone remodeling process. It is based on the uniform strength theory of optimization and employs a truss-like model for bone. The truss was subjected to external loads including 5 point loads simulating the hip joint contact forces and 3 muscular forces at the attachment sites of the muscles to the bone … …American Journal of Applied Sciences, Vol. 6, Issue 3 · 31 Mar 2009 · 7,174 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordVisual Contact between Two Earth’s SatellitesM. E. Awad, M. A. Sharaf, E. H. KhatabProblem statement: In this study, an analytical expression for predicting mutually visible between Earth’s satellites is developed. Approach: A relative satellite-satellite visibility function is developed in terms of orbital elements for two satellites in the same orbital plane. Also, a simple computational algorithm is expressed to compute the visibility function. Results: This study presents a new and easy method to … …American Journal of Applied Sciences, Vol. 9, Issue 5 · 27 Feb 2012 · 6,979 accessesView PDF Cite